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Case Rep Cardiol. 2019 Mar 26;2019:2756319. doi: 10.1155/2019/2756319. eCollection 2019.

Recurrent Coronary Thrombus in a Patient with Chronic Immune Thrombocytopenia with Treatment Using Eltrombopag.

Author information

1
Department of Cardiology, Internal Medicine 3, Hamamatsu University School of Medicine, Hamamatsu, Japan.
2
Department of Hematology, Internal Medicine 3, Hamamatsu University School of Medicine, Hamamatsu, Japan.

Abstract

Background:

Eltrombopag, a nonpeptide thrombopoietin receptor agonist (TPO-RA), has been reported to be an effective therapy for chronic immune thrombocytopenia (ITP). However, a higher incidence of arterial and venous thromboembolic events was reported after using eltrombopag.

Case Presentation:

A 67-year-old man, treated with eltrombopag due to chronic ITP, was admitted due to acute coronary syndrome (ACS). Although coronary angiography revealed no occlusion, cardiac magnetic resonance imaging suggested a myocardial infarction in the territory of the left circumflex coronary artery. Three months after the ACS event, the obtuse marginal branches exhibited significant stenosis; hence, a percutaneous coronary intervention (PCI) was performed to implant a zotarolimus-eluting stent under the treatment of a dual antiplatelet therapy. However, stent thrombosis occurred 3 hours after PCI and required three other PCIs during the eltrombopag treatment.

Conclusion:

We present a case of an ITP patient, who experienced repeated coronary and stent thrombosis during the treatment with eltrombopag. We propose that the risk of ACS and consequent coronary stent thrombosis should be considered before the introduction of eltrombopag.

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